I've read the posts regarding the six speed fluid being lifetime. However for those who would like to be able to check if the fluid level is correct and possibly drain it at certain intervals, what is the procedure with the I4 engine? I ask because I just traded in a vehicle which was new, had no trans dipstick and its trans failed. Just looking for the procedure for my own good. Some may say go to the dealer. Well I did, asked two techs about Dexos engine oil and neither knew a thing about it nor the trans fluid level question. Thanks